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crypto: hisilicon/hpre - HPRE_OVERTIME_THRHLD can be written by debugfs 

Registers in "hpre_dfx_files" can only be cleaned to zero but
HPRE_OVERTIME_THRHLD, which can be written as any number.

Fixes: 64a6301ebee7("crypto: hisilicon/hpre - add debugfs for ...")
Signed-off-by: Hui Tang <tanghui20@huawei.com>
Signed-off-by: Meng Yu <yumeng18@huawei.com>
Reviewed-by: Zaibo Xu <xuzaibo@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Hui Tang 2020-07-10 15:40:42 +08:00 committed by Herbert Xu
parent d7ba2c09e1
commit 6bc937b0b9
1 changed files with 7 additions and 5 deletions
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12
drivers/crypto/hisilicon/hpre/hpre_main.c
View File

@ -548,13 +548,15 @@ static int hpre_debugfs_atomic64_get(void *data, u64 *val)
static int hpre_debugfs_atomic64_set(void *data, u64 val)
{
struct hpre_dfx *dfx_item = data;
struct hpre_dfx *hpre_dfx = dfx_item - HPRE_OVERTIME_THRHLD;
struct hpre_dfx *hpre_dfx = NULL;
if (val)
return -EINVAL;
if (dfx_item->type == HPRE_OVERTIME_THRHLD)
if (dfx_item->type == HPRE_OVERTIME_THRHLD) {
hpre_dfx = dfx_item - HPRE_OVERTIME_THRHLD;
atomic64_set(&hpre_dfx[HPRE_OVER_THRHLD_CNT].value, 0);
} else if (val) {
return -EINVAL;
}
atomic64_set(&dfx_item->value, val);
return 0;